11
dc2442af
DEMO MANUAL DC2442A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
On the lower right of the GUI window is the Telemetry
Plot pane. By selecting various measurement functions
in the Telemetry pane, a graphic display of that function
vs time is displayed. This gives an instant indication how
that function varies with time.
Figure 10. Telemetry Plot Pane
COMPUTER WITH
LTpowerPlay
RAM
LOGIC
EEPROM
I
2
C BUS
dc2442a F11
LTC4282
STORE
RESTORE
LTC4282 Registers
The LTC4282 is highly configurable through its register
set. Refer to the LTC4282 data sheet for a complete
discussion of the registers and functions available. Get
immediate access to detailed help for the selected register
in LTpowerPlay by pressing the F1 key on your keyboard.
Exercise extreme caution when reconfiguring the register
set as this board comes preprogrammed to work with
the 200A application and changing registers could cause
adverse effects and unknown failures.
Figure 11. LTC4282 RAM and Nonvolatile Memory
The LTC4282 features an EEPROM nonvolatile memory
that holds device configuration information and a snapshot
of past fault information. When the part receives power,
it executes a power-on reset, and restores the contents
of the EEPROM to its operating RAM memory. Following
this power-on restore, operating RAM memory can be
modified with I
2
C bus commands that modify the part
behavior. These modifications are affected by using the
PC > RAM button in the tool bar. Also included in the toolbar
are buttons for reading the internal RAM data on the PC
by using the PC < RAM button on the tool bar. Similarly,
there are buttons for moving the contents of the RAM to
the NVM (EEPROM) and vice versa using the RAM > NVM
and RAM < NVM buttons on the toolbar.
Figure 12. Data Transfer Buttons to Transfer Data to
and from Nonvolatile Memory
WARNING:
The LTC4282 comes preprogrammed in the Low
Stress Staged Start configuration with specific settings,
which support a 200A application. Changing the LTC4282’s
programming on the DC2442 is strongly discouraged to
ensure safety and proper operation of the board. Exercise
caution if changing register settings and refer to Table 7
for key register settings, which should remain untouched.
SOFTWARE CONTROL WITH LTpowerPlay
